Voltage THD and Integrated Voltage Harmonics Factors of Three-Phase Multilevel Voltage Source Inverter with Nearest Vector Selecting Space Vector Control

摘要

The paper deals with the nearest vector selecting space vector control (SVC) of any arbitrary MLVSI circuit with any arbitrary number of the equal feeding DC voltage levels. The Lab View model for the instantaneous SVC controller is designed. The MLVSI output voltage THD and integrated voltage harmonics factors (IHF) needed for computing of the load circuit voltages and currents and their quality indices are estimated as functions of the amplitude modulation index and compared with the corresponding results of the quarter-wave symmetric space vector PWM (SVPWM).